A teenager choked a PE teacher unconscious after disturbing a classroom.
Aaron Strachan, 18, turned on the staff member at a residential unit in Bishopbriggs, East Dunbartonshire, on June 22, 2022.
Strachan, now of Edinburgh, grasped the teacher from behind and grabbed him by the neck for five or six seconds.
Other members of staff had to intervene to separate the pair.
At Glasgow Sheriff Court on Wednesday, Strachan pled guilty to assaulting the teacher to his severe injury and danger of life.
He also admitted a later assault on another man at the unit to his injury.
The court heard the PE teacher was asked to take Strachan back to a room at the unit after some initial disruption.
He heard an alarm sound and headed to a football pitch on the unit where he waited at a wall.
Strachan walked by him before he turned back the way.
Prosecutor Jenny Reid said: “Strachan placed his arms around [the teacher]’s neck and squeezed it which lasted five to six seconds.
“This was with such force that [the teacher] was lifted off his feet and left unconscious.”
Staff intervened to get Strachan to let go of the teacher who was later taken to hospital.
The teacher was left with a bruised back.
The hearing was told that later that year, Strachan was being restrained by members of staff at the unit on September 30.
During the struggle, Strachan hit another member of staff to his left eye and bit him to the tricep which pierced his skin.
The man was treated with a dressing to his tricep and received a tetanus jag.
Sentence was deferred pending background reports by Sheriff Gerard Bonnar until next month.
The sheriff stated: “These are serious matters.”
Strachan was granted bail meantime.
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